Home / 20,749.85-31,124.99-5,958.74

Finding the Fourth Proportional to 20,749.85, 31,124.99 and 5,958.74

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Solution

The fourth proportional to 20,749.85, 31,124.99 and 5,958.74 is: 8,938.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.85 : 31,124.99 = 5,958.74 : x
  2. Step 2: Convert to fraction form
    20,749.85/31,124.99 = 5,958.74/x
  3. Step 3: Cross multiply
    20,749.85x = 31,124.99 × 5,958.74
  4. Step 4: Simplify right side
    20,749.85x = 185,465,582.18
  5. Step 5: Solve for x
    x = 185,465,582.18/20,749.85
  6. Step 6: Final answer
    x = 8,938.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.